WO2020233286A1

WO2020233286A1 - Display substrate, display panel, and display device

Info

Publication number: WO2020233286A1
Application number: PCT/CN2020/084689
Authority: WO
Inventors: 许传志; 楼均辉; 张露; 高孝裕
Original assignee: 昆山国显光电有限公司
Priority date: 2019-05-23
Filing date: 2020-04-14
Publication date: 2020-11-26
Also published as: CN111834375A; US11864432B2; US20210296419A1; CN111834375B

Abstract

The present application provides a display substrate, a display panel, and a display device. The display substrate comprises: a first display region which comprises first sub-pixels; a second display region which comprises second sub-pixels; a shielding layer disposed in the second display region; first signal lines for providing control signals to the first sub-pixels, wherein the first signal lines extend from the first display region and pass through the second display region, and the part of the first signal lines in the second display region is disposed above the shielding layer; and a pixel circuit disposed below the shielding layer and used for driving the second sub-pixels, wherein the shielding layer is used for shielding an electric field between the part of the first signal lines in the second display region and the device in the pixel circuit.

Description

Display substrate, display panel and display device

Technical field

This application relates to the field of display technology, and in particular to a display substrate, a display panel and a display device.

Background technique

With the rapid development of electronic devices, users have higher and higher requirements for the screen-to-body ratio, making the full-screen display of electronic devices attract more and more attention in the industry. Electronic devices such as mobile phones, tablet computers, etc., need to integrate front cameras, earpieces, and infrared sensing elements. Slots on the display (Notch) or holes on the display are used to slot the display. The area or opening area is set with the camera, earpiece, infrared sensor, etc., but the grooved area cannot be used to display the picture, such as the grooved area of Liu Haiping. For electronic devices that implement the camera function, external light can enter the photosensitive element located below the screen through the slotted area or the open area on the display screen. However, these electronic devices are not full screens in the true sense, and cannot be displayed on all areas of the entire display screen. For example, images cannot be displayed in the camera area of the display screen.

Summary of the invention

According to a first aspect of the embodiments of the present application, there is provided a display substrate, including a first display area, the first display area including a first sub-pixel; a second display area, the second display area includes a second sub-pixel A pixel; a shielding layer disposed in the second display area; a first signal line for providing control signals to the first sub-pixel, wherein the first signal line extends from the first display area through In the second display area, the portion of the first signal line located in the second display area is disposed above the shielding layer; and a pixel circuit is disposed below the shielding layer for driving the second sub Pixel; wherein the shielding layer is used to shield the electric field between the portion of the first signal line located in the second display area and the pixel circuit.

According to a second aspect of the embodiments of the present application, there is provided a display panel including the above-mentioned display substrate and a packaging structure; the first display area is at least partially surrounded by the second display area; the packaging structure includes a polarizer The polarizer covers at least the second display area; the polarizer does not cover the first display area.

According to a third aspect of the embodiments of the present application, there is provided a display device, including: a device body having a device area; the above display panel, covering the device body; wherein the device area is located in the first Below the display area, and the device area is provided with a photosensitive device that emits or collects light through the first display area; the photosensitive device includes a camera and/or a light sensor.

In the display substrate, display panel, and display device provided by the embodiments of the present application, a shielding layer is provided in the second display area, and the portion of the first signal line in the second display area is provided above the shielding layer, and the pixel circuit is provided on the shielding layer Below, the shielding layer can shield the electric field formed between the first signal line and the device in the pixel circuit of the second sub-pixel, so as to avoid the impact of the first signal line in the second display area on the pixel of the second sub-pixel. The signal received by the circuit has an impact, which leads to the problem of poor display effect in the second display area, which ensures the display effect of the second display area and improves the user experience.

Description of the drawings

FIG. 1 is a top view of a display substrate provided by an embodiment of the present application;

2 is a partial schematic diagram of the arrangement of sub-pixels in the display substrate shown in FIG. 1;

FIG. 3 is a schematic diagram of signal lines in the display substrate shown in FIG. 2;

4 is a cross-sectional view of the display substrate shown in FIG. 2;

FIG. 5 is another schematic diagram of the signal lines in the display substrate shown in FIG. 2, which is different from the driving mode of the first display area in FIG. 3;

6 is another cross-sectional view of the display substrate shown in FIG. 2, which is different from the driving mode of the first display area in FIG. 4;

FIG. 7 is a schematic diagram of a projection of a third electrode located in a first display area on a substrate according to an embodiment of the present application;

FIG. 8 is another schematic diagram of projection on the substrate of the third electrode whose shape is changed on the basis of FIG. 7 in the first display area provided by an embodiment of the present application;

FIG. 9 is another schematic diagram of projection on the substrate of the third electrode with a changed shape based on FIG. 7 in the first display area provided by an embodiment of the present application.

Detailed ways

Here, exemplary embodiments will be described in detail, and examples thereof are shown in the accompanying drawings. When the following description refers to the drawings, unless otherwise indicated, the same numbers in different drawings indicate the same or similar elements. The implementation manners described in the following exemplary embodiments do not represent all implementation manners consistent with the present application. Rather, they are merely examples of devices consistent with some aspects of the application as detailed in the appended claims.

As mentioned in the background art, the display screen of an electronic device is provided with a slotted area, and photosensitive devices such as cameras, earpieces, and infrared sensing elements are arranged in the slotted area, and external light enters the photosensitive device through the slotted area. However, since the slotted area cannot be displayed, a full-screen display of the electronic device cannot be realized.

By arranging the transparent display screen on the above-mentioned electronic device, the photosensitive device is arranged under the transparent display screen, and under the premise of ensuring the normal operation of the photosensitive device, a full-screen display of the electronic device can be realized. The display screen of an electronic device includes a transparent display screen and a non-transparent display screen. The transparent display screen is used for display and light transmission, and the non-transparent display screen is used for display. The structure of the transparent display screen is different from that of the non-transparent display screen, and the driving modes of the two are also different. For example, non-transparent display screens are generally actively driven, while transparent display screens are passively driven or actively driven, and the active driving mode of transparent display screens is different from that of non-transparent display screens, and the two cannot share scan lines and data lines. Among them, the active driving mode of the non-transparent display screen means that the anode of the pixel in the non-transparent display screen is connected to the signal line of the electronic device through the pixel circuit, such as electrical connection, and the signal line provides the pixel in the non-transparent display screen through the pixel circuit. Signal; the passive driving of a transparent display screen means that the anode of the pixel in the transparent display screen is directly connected to the signal line of the electronic device, such as electrical connection, the signal line directly provides a signal to the pixel in the transparent display screen; the active of the transparent display screen The driving mode refers to that the anode of the pixel in the transparent display screen is connected to the signal line of the electronic device through the first transistor, for example, is electrically connected, and the signal line provides a signal to the pixel in the transparent display screen through the first transistor.

When using electronic equipment to display, the display effect of the non-transparent display screen will become worse. The inventor found through research that the reason for this problem is that when the data line or scan line of the transparent display screen is connected to the driver chip located in the border area of the electronic device, it passes through the non-transparent display screen, the data line and/or scan line of the transparent display screen. The part where the line is located on the non-transparent display screen will be coupled with the devices in the pixel circuit of the non-transparent display screen, thereby forming an electric field with the devices in the pixel circuit of the non-transparent display screen, such as transistors in the pixel circuit, and the resulting electric field will be It affects the stability of the signal received by the pixel circuit in the non-transparent display screen, which in turn causes the display effect of the non-transparent display screen to deteriorate.

To solve the above-mentioned problems, embodiments of the present application provide a display substrate, a display panel, and a display device, which can well solve the above-mentioned problems.

The display substrate, display panel, and display device in the embodiments of the present application will be described in detail below with reference to the accompanying drawings. In the case of no conflict, the following embodiments and features in the implementation can be mutually supplemented or combined.

FIG. 1 is a top view of a display substrate provided by an embodiment of the present application; FIG. 2 is a partial schematic diagram of the arrangement of sub-pixels in the display substrate shown in FIG. 1; FIG. 3 is one of the signal lines in the display substrate shown in FIG. 4 is a cross-sectional view of the display substrate shown in FIG. 2; FIG. 5 is another schematic diagram of the signal lines in the display substrate shown in FIG. 2, which is different from the driving mode of the first display area in FIG. 3; 6 is another cross-sectional view of the display substrate shown in FIG. 2, which is different from the driving method of the first display area in FIG. 4; FIG. 7 is a third electrode located in the first display area provided by an embodiment of the present application. A schematic diagram of a projection on the bottom; FIG. 8 is another schematic diagram of a projection on the substrate of a third electrode in the first display area provided in the first display area with a changed shape on the basis of FIG. 7; FIG. 9 is a schematic diagram of another projection on the substrate The embodiment provides another schematic diagram of projection on the substrate of the third electrode whose shape is changed on the basis of FIG. 7 in the first display area.

The embodiment of the present application provides a display substrate. Referring to FIG. 1, the display substrate 100 includes a first display area 10 and a second display area 20. The driving mode of the first display area 10 is different from the driving mode of the second display area 20. The driving mode of the second display area 20 is active driving. The pixels in the second display area 20 communicate with the signal of the display substrate 100 through the pixel circuit. Wire electrical connection.

Referring to FIG. 2, the display substrate 100 is provided with a first sub-pixel 11 located in the first display area 10 and a second sub-pixel 21 located in the second display area 20.

Referring to FIGS. 3 and 4, the display substrate 100 further includes a first signal line 12 for providing control signals to the first sub-pixel 11 and a pixel circuit 22 for driving the second sub-pixel 21. The first signal line 12 needs to be connected to the driving chip located in the frame area of the display substrate 100, and the first signal line 12 extends from the first display area 10 through the second display area 20. The pixel circuit 22 is arranged in the second display area 20. The second display area 20 is provided with a shielding layer 30, the part of the first signal line 12 in the second display area 20 is provided above the shielding layer 30, and the pixel circuit 22 is provided under the shielding layer 30. The shielding layer 30 is used to shield the first The signal line 12 is located in the electric field between the part of the second display area 20 and the device in the pixel circuit 22.

The first signal line 12 may include a first data line 121 and/or a first scan line 122. Referring to FIG. 3, the first data line 121 is used to provide data signals to the first sub-pixel 11, and the first scan line 122 is used to provide scan signals to the first sub-pixel 11. When the first signal line 12 includes the first data line 121, the first data line 121 may include a first segment 1211 located in the first display area 10 and a second segment 1212 located in the second display area 20. When the first signal line 12 includes the first scan line 122, the first scan line 122 may include a third segment 1221 located in the first display area 10 and a fourth segment 1222 located in the second display area 20. The part of the first signal line 12 located in the second display area 20 is arranged above the shielding layer 30, in other words, the second section 1212 and the fourth section 1222 are arranged above the shielding layer 30.

In the display substrate 100 provided by the embodiment of the present application, the shielding layer 30 is provided in the second display area 20, and the portion of the first signal line 12 in the second display area 20 is provided above the shielding layer 30, and the pixel circuit 22 is provided on the shielding layer. Below the layer 30, the shielding layer 30 can shield the electric field formed between the first signal line 12 and the devices in the pixel circuit 22 of the second sub-pixel 21, so as to avoid the part of the first signal line 12 located in the second display area 20. This affects the signal received by the pixel circuit 22 of the second sub-pixel 21, resulting in a problem of poor display effect in the second display area 20, ensuring the display effect of the second display area 20 and improving the user experience.

Optionally, the light transmittance of the first display area 10 is greater than the light transmittance of the second display area 20. Since the light transmittance of the first display area 10 is greater than the light transmittance of the second display area 20, the photosensitive device can be arranged under the first display area 10, and the full screen of the display substrate can be realized under the premise of ensuring the normal operation of the photosensitive device. display.

Optionally, the pixel circuit 22 for driving the second sub-pixel 21 may be a 2T1C circuit, a 3T1C circuit, or a 3T2C circuit, or a 7T1C circuit, or a 7T2C circuit, where T represents a transistor, and C represents a capacitor, that is, the second sub-pixel The device in the pixel circuit 22 of 21 includes a second transistor and a capacitor. The shielding layer 30 can shield the electric field between the portion of the first signal line 12 located in the second display area 20 and the gate of the second transistor and the plate of the capacitor.

The shielding layer 30 may be connected to a voltage stabilizing signal of the display substrate 100 or a voltage source with a stable voltage. With this arrangement, a stable electric field is formed between the shielding layer 30 and the components in the pixel circuit 22 of the second sub-pixel 21. The stable electric field will not affect the signal received by the pixel circuit 22 of the second sub-pixel 21, and also The shielding layer 30 may shield the electric field between the portion of the first signal line 12 located in the second display area 20 and the device in the pixel circuit 22.

Optionally, the second display area 20 may have a fingerprint recognition function, and the light transmittance of the shielding layer 30 may be greater than or equal to 70%, so as to meet the light transmittance required by the second display area for fingerprint recognition. Further, the material of the shielding layer 30 may include at least one of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, or silver-doped indium zinc oxide. In other embodiments, when the second display area 20 does not have a fingerprint recognition function, the material of the shielding layer 30 may also be an opaque material.

Optionally, the shielding layer 30 may cover the second display area 20. With this arrangement, the shielding layer 30 has the best shielding effect on the electric field between the first signal line 12 and the devices in the pixel circuit 22.

In another embodiment, the shape of the shielding layer 30 can also be the same as the shape of the portion of the first signal line 12 located in the second display area 20, and the shielding layer 30 is correspondingly disposed on the first signal line 12 located in the second display area 20. Below the part. With this configuration, under the premise of ensuring the shielding effect of the shielding layer 30, the materials required for preparing the shielding layer 30 can be saved.

The second sub-pixel 21 may include a first electrode 211, a first light-emitting structure on the first electrode 211, and a second electrode on the first light-emitting structure. The first sub-pixel 11 may include a third electrode 111, a second light emitting structure on the third electrode 111, and a fourth electrode on the second light emitting structure. Wherein, the first light-emitting structure and the second light-emitting structure can be formed in the same process step, and the second electrode and the fourth electrode can be formed in the same process step, that is, they are formed by evaporation using the same mask. The first electrode 211 and the third electrode 111 may be anodes, the second electrode and the fourth electrode may be cathodes, and the second electrode and the fourth electrode may be connected surface electrodes.

The driving mode of the first sub-pixel 11 in the first display area 10 may be passive driving or active driving.

In the display substrate 100 shown in FIGS. 3 and 4, the driving mode of the first sub-pixel 11 is passive driving. In the display substrate 100 shown in FIG. 3, the first signal line includes a first data line 121 and a first scan line 122. The first data line 121 is connected to the third electrode 111 of the first sub-pixel 11, and the first scan line 122 is connected to the third electrode 111 of the first sub-pixel 11. When the driving mode of the first sub-pixel 11 is passive driving, the wiring arrangement in the first display area 10 is relatively simple, which can reduce the structural complexity in the first display area 10, so that external light enters the first display area 10 At this time, the influence of the superposition of diffraction patterns generated by the complicated wiring in the first display area 10 on imaging is reduced.

In the display substrate 100 shown in FIGS. 5 and 6, the driving mode of the first sub-pixel 11 is active driving. When the driving mode of the first sub-pixel 11 is active driving, the first display area 10 is provided with a first transistor 13 corresponding to the first sub-pixel 11 one-to-one, and the first transistor 13 includes a source 131, a drain 132 and a gate.极 133. The first signal line 12 may include a first data line 121 and/or a first scan line 122. The first data line 121 is connected to the source 131 of the first transistor 13, the first scan line 122 is connected to the gate 133 of the first transistor 13, and the third electrode 111 of the first sub-pixel 11 is connected to the drain of the first transistor 13.极132.

Optionally, referring to FIG. 2 again, the first sub-pixels 11 in the first display area 10 may be divided into at least one first sub-pixel group 101, and the first sub-pixel group 101 includes a plurality of sub-pixel groups arranged at intervals along the second direction. The first sub-pixel 11. When the first sub-pixels 11 in the first display area 10 are divided into a plurality of first sub-pixel groups 101, the plurality of first sub-pixel groups 101 are arranged at intervals along the first direction. Referring to FIG. 3, when the driving mode of the first sub-pixel 11 is passive driving, the third electrode 111 of the first sub-pixel 11 in the same first sub-pixel group 101 can be connected to the same first data line 121. Referring to FIG. 5, when the driving mode of the first sub-pixels is active driving, the first transistors 13 corresponding to the first sub-pixels 11 in the same first sub-pixel group 101 can be connected to the same first data line 121.

Optionally, referring to FIG. 2 again, the first sub-pixels 11 in the first display area 10 may be further divided into at least one second sub-pixel group 102, and the second sub-pixel group 102 includes multiple sub-pixels arranged at intervals along the first direction. One first sub-pixel 11. When the first sub-pixel 11 in the first display area 10 is divided into a plurality of second sub-pixel groups 102, the plurality of second sub-pixel groups 102 are arranged at intervals along the second direction. Referring to FIG. 3, when the driving mode of the first sub-pixel 11 is passive driving, the third electrodes 111 of a plurality of first sub-pixels 11 in the same second sub-pixel group 102 may be connected to the same first scan line 122. Referring to FIG. 5, when the driving mode of the first sub-pixel is active driving, the first transistors 13 corresponding to the multiple first sub-pixels 11 in the same second sub-pixel group 102 can be connected to the same first scan line 122.

Referring again to FIG. 3 or FIG. 5, a second signal line 29 may also be provided in the display substrate 100. The second signal line 29 may include a second data line 23 and/or a second scan line 24. The second data line 23 is used to provide data signals to the second sub-pixel 21, and the second scan line 24 is used to provide scan signals to the second sub-pixel 21.

Optionally, referring to FIGS. 2 and 3, the second sub-pixels 21 in the second display area 20 may be divided into at least one third sub-pixel group 201, and the third sub-pixel group 201 includes the second sub-pixel groups arranged at intervals along the second direction. A plurality of second sub-pixels 21. When the second sub-pixel 21 in the second display area 20 is divided into a plurality of third sub-pixel groups 201, the plurality of third sub-pixel groups 201 are arranged at intervals along the first direction. The pixel circuits 22 corresponding to the multiple second sub-pixels 21 in the same third sub-pixel group 201 can be connected to the same second data line 23.

The second sub-pixels 21 in the second display area 20 can be further divided into at least one fourth sub-pixel group 202, and the fourth sub-pixel group 202 includes a plurality of second sub-pixels 21 arranged at intervals along the first direction. When the second sub-pixel 21 in the second display area 20 is divided into a plurality of fourth sub-pixel groups 202, the plurality of fourth sub-pixel groups 202 are arranged at intervals along the second direction. The pixel circuits 22 of a plurality of second sub-pixels 21 in the same fourth sub-pixel group 202 can be connected to the same second scan line 24.

Optionally, the first direction and the second direction may be perpendicular to each other. Among them, the first direction may be a row direction (may be called a horizontal direction), and the second direction may be a column direction (may be called a vertical direction). Alternatively, the first direction may be a column direction, and the second direction may be a row direction. In the figure, only the first direction is the row direction and the second direction is the column direction as an example for description, and other cases are not shown.

Optionally, the second signal line 29 may be located under the shielding layer 30. With this arrangement, the shielding layer 30 can shield the electric field between the second signal line 29 and the first signal line 12, so as to prevent the formation of an electric field between the second signal line 29 and the first signal line 12, and affect the second signal line 29. The stability of the transmitted signal can improve the display effect of the second display area 20.

4 and 6, the display substrate 100 may further include a substrate 41, a buffer layer 42 on the substrate 41, a second semiconductor layer 26 and a first semiconductor layer 14 formed on the buffer layer 42, and a second semiconductor layer formed on the second semiconductor layer. The gate insulating layer 43 on the semiconductor layer 26 and the first semiconductor layer 14, the capacitor insulating layer 44 above the gate insulating layer 43, the interlayer dielectric layer 45 above the capacitor insulating layer 44, and the interlayer dielectric layer 45 The planarization layer 46, the pixel defining layer 47 on the planarization layer 46. The second transistor 25 in the pixel circuit 22 of the second display area includes a source 251, a drain 252, and a gate 253. The gate 253 is located between the gate insulating layer 43 and the capacitor insulating layer 44. The source 251 and the drain 252 is located on the interlayer dielectric layer 45 and passes through the gate insulating layer 43, the capacitor insulating layer 44 and the through holes on the interlayer dielectric layer 45 to contact the second semiconductor layer 26. The capacitor of the pixel circuit 22 includes an upper electrode plate 271 and a lower electrode plate 272. The upper electrode plate 271 is located between the capacitor insulating layer 44 and the interlayer dielectric layer 45, and the lower electrode plate 272 is located between the gate insulating layer 43 and the capacitor insulating layer 44. between.

The planarization layer 46 may include a lower planarization layer 461 and an upper planarization layer 462, and the shielding layer 30 is located between the lower planarization layer 461 and the upper planarization layer 462.

4 and 6, the first electrode 211 of the second sub-pixel 21 is disposed above the shielding layer 30, the shielding layer 30 is provided with a through hole 31, and the second transistor 25 in the pixel circuit 22 of the second sub-pixel 21 The drain 252 and the corresponding first electrode 211 are electrically connected through the through hole 31. With this arrangement, the arrangement of the shielding layer 30 will not affect the driving of the second sub-pixel 21 by the pixel circuit 22.

6 again, when the driving mode of the first display area 10 is active driving, the source 131 and the drain 132 of the first transistor 13 corresponding to the first sub-pixel are located on the interlayer dielectric layer 45 and pass through the gate insulation. The through holes on the layer 43, the capacitor insulating layer 44 and the interlayer dielectric layer 45 are in contact with the first semiconductor layer 14; the gate electrode 133 is located between the gate insulating layer 43 and the capacitor insulating layer 44.

Optionally, referring to FIG. 3, when the first signal line includes the first data line 121, the first data line 121 may include a first segment 1211 located in the first display area 10 and a second segment 1212 located in the second display area 20. .

Optionally, the first section 1211 and the second section 1212 may be located in different layers, and a first insulating layer is provided between the first section 1211 and the second section 1212, and a first through hole is provided on the first insulating layer. One section 1211 and the second section 1212 are connected through the first through hole. With this arrangement, the first insulating layer can separate the first segment 1211 located in the first display area 10 from the second segment 1212 located in the second display area 20, in other words, the first segment 1211 can be located below the first insulating layer The second section 1212 can be arranged above the first insulating layer, but the arrangement of the first section 1211 and the second section 1212 relative to the first insulating layer is not limited to this, and the advantages of such arrangement will be described in detail below. In addition, since the second segment 1212 is located above the shielding layer 30, the shielding layer 30 can shield the electric field between the second segment 1212 and the second transistor 25 or the electric field between the second signal line 29, thereby improving the second sub The stability of the signal received by the pixel 21 improves the display effect of the second display area 20.

Referring to FIG. 6, the first electrode 211 may be disposed above the shielding layer 30, and the second section 1212 of the first data line 121 may be formed in the same process step as the first electrode 211. Specifically, when forming the second segment 1212 and the first electrode 211 of the first data line 121, a metal layer can be formed on the entire surface of the second display area 20 first, and then the metal layer is patterned, that is, the metal layer is corroded Or the pattern left by etching is the first electrode 211 and the second segment 1212 of the first data line 121. This arrangement can simplify the complexity of the manufacturing process of the display substrate and simplify the process flow.

The driving mode of the first display area 10 is active driving. When the first signal line includes the first data line 121, the first segment 1211 of the first data line 121 can be in the same position as the source 131 and the drain 132 of the first transistor 13 Formed in process steps. In this case, the first insulating layer includes a planarization layer 46. This arrangement can simplify the complexity of the manufacturing process of the display substrate and simplify the process flow.

Optionally, when the material of the shielding layer 30 is a light-transmitting material, the first segment 1211 of the first data line 121 in the first display area and the shielding layer 30 can be formed in the same process step. In this case, the first insulating layer includes the upper planarization layer 462. This arrangement can simplify the complexity of the manufacturing process of the display substrate and simplify the process flow.

Optionally, when the first signal line includes the first data line 121, the first data line 121 includes a first segment 1211 located in the first display area 10 and a second segment 1212 located in the second display area 20. The first electrode 211 of the second sub-pixel 21 is disposed above the shielding layer 30.

The second segment 1212 and the first electrode 211 of the second sub-pixel 21 can be formed in the same process step. The first segment 1211 and the third electrode 111 of the first sub-pixel 11 can be formed in the same process step. The first electrode 211 , The third electrode 111, the first section 1211 and the second section 1212 are located in the same layer, and the first section 1211 and the second section 1212 overlap. With this arrangement, it is not necessary to provide a through hole on the insulating layer to realize the connection between the first section and the second section, which simplifies the preparation process of the first data line.

Optionally, referring to FIG. 3 or FIG. 5, when the first signal line includes the first scan line 122, the first scan line 122 may include the third segment 1221 located in the first display area 10 and the third segment 1221 located in the second display area 20. Four paragraphs 1222. The fourth section 1222 is located above the shielding layer 30, a second insulating layer is provided between the third section 1221 and the fourth section 1222, a second through hole is provided on the second insulating layer, and the third section 1221 and the fourth section 1222 pass through Connect through the second through hole. With this arrangement, the second insulating layer can separate the third segment 1221 located in the first display area 10 from the fourth segment 1222 located in the second display area 20, in other words, the third segment 1221 can be located below the second insulating layer The fourth section 1222 can be arranged above the second insulating layer, but the arrangement of the third section 1221 and the fourth section 1222 relative to the second insulating layer is not limited to this, and the advantages of such arrangement will be described in detail below. In addition, since the fourth section 1222 is located above the shielding layer 30, the shielding layer 30 can shield the electric field between the fourth section 1222 and the second transistor 25 or the electric field between the second signal line 29, thereby improving the second sub The stability of the signal received by the pixel improves the display effect of the second display area.

Optionally, the fourth segment 1222 of the first scan line 122 and the first electrode 211 of the second sub-pixel 21 may be formed in the same process step. Specifically, when forming the fourth segment 1222 of the first scan line 122 and the first electrode 211, a metal layer can be formed on the entire surface of the second display area 20 first, and then the metal layer is patterned, that is, the metal layer is corroded The pattern left by etching or the like is the first electrode 211 and the fourth section 1222 of the first scan line 122. This arrangement can simplify the complexity of the manufacturing process of the display substrate and simplify the process flow.

Optionally, the third segment 1221 of the first scan line 122 and the gate 133 may be located on the same layer. In this case, the second insulating layer includes a capacitive insulating layer 44, an interlayer dielectric layer 45, and a planarization layer 46.

Optionally, the third electrode 111 of each first sub-pixel may include at least one electrode block, and the light-emitting structure includes a light-emitting structure block corresponding to each electrode block.

Optionally, referring to FIGS. 7-9, when the third electrode 111 includes two or more electrode blocks 1111, the two or more electrode blocks 1111 are arranged at intervals along the first direction, and the third electrode 111 The electrode 111 further includes a connecting portion 1112 disposed between two adjacent electrode blocks 1111, and the two adjacent electrode blocks 1111 are electrically connected through the corresponding connecting portion 1112. With this arrangement, the electrode block 1111 in the third electrode 111 can be provided with a signal from one data line or scan line, which can reduce the complexity of the wiring in the first display area 10, and can effectively improve light transmission. The superposition of diffraction images caused by the complicated wiring of 10 further improves the image quality taken by the camera on the backlight surface of the first display area 10 and avoids image distortion defects. In addition, a plurality of electrode blocks in the same third electrode 111 are electrically connected, so that the light-emitting structure blocks corresponding to the plurality of electrode blocks 1111 of the same third electrode 111 can be controlled to emit light or be turned off at the same time, which can simplify the control of the first display area. control.

Optionally, the electrode block 1111 and the connecting portion 1112 of the same third electrode 111 are arranged on the same layer. With this arrangement, the electrode block 1111 and the connecting portion 1112 of the same third electrode 111 can be formed in the same process step, reducing the complexity of the manufacturing process.

Further, the size of the connecting portion 1112 perpendicular to the extending direction thereof is greater than 3 μm and less than half of the maximum size of the electrode block 1111. By setting the width of the connecting portion 1112 to be greater than 3 μm, the resistance of the connecting portion can be made smaller; by setting the length of the connecting portion 1112 to be less than one-half of the maximum size of the electrode block 1111, the connecting portion 1112 can be set to the electrode The size of the block 1111 has a small effect, so as to prevent the size of the electrode block 1111 from being reduced due to the large length of the connecting portion 1112, and the effective light-emitting area of the first display area 10 is reduced.

Further, the electrode block 1111 of the third electrode 111 includes a first graphic unit or a plurality of first graphic units, wherein the projection of the first graphic unit on the substrate of the display substrate 100 may include a circle, an ellipse, or a dumbbell. Shape, gourd shape or rectangle.

The first display area 10 shown in FIG. 7 is provided with a third electrode 111 in the first direction. The third electrode 111 includes six electrode blocks 1111, and each electrode block 1111 includes a first pattern unit. The projection of the first graphic unit on the substrate is rectangular. The first display area 10 shown in FIG. 8 is provided with a third electrode 111 in the first direction. The third electrode 111 includes five electrode blocks 1111. Each electrode block 1111 includes a first pattern unit. The projection of the first graphic unit on the substrate is circular. The first display area 10 shown in FIG. 9 is provided with two third electrodes 111 in the first direction, each third electrode 111 includes two electrode blocks 1111, and the electrode block 1111 includes a first pattern unit, The projection of the graphic unit on the substrate is dumbbell-shaped. The projection of the first pattern unit on the substrate is a circle, an ellipse, a dumbbell and a gourd. The shape of the pattern unit can change the periodic structure of the third electrode 111 that produces diffraction, that is, change the distribution of the diffraction pattern. Therefore, the influence of the pattern generated by the diffraction effect when the external incident light passes through the first display area 10 on the imaging is reduced. In addition, when the projection of the first pattern unit on the substrate is the above-mentioned shape, the pitch of the third electrode 111 in the second direction changes continuously or intermittently, and two adjacent third electrodes 111 in the first direction are The spacing in the second direction changes continuously or intermittently, so that the positions of the two adjacent third electrodes diffracted are different, and the diffraction patterns generated at different positions cancel each other out, which can effectively reduce the influence of the diffraction pattern on imaging, thereby ensuring The image taken by the camera provided under the first display area 10 has high definition.

Optionally, referring to FIGS. 7 and 8, in the second direction, among the plurality of electrode blocks 1111 of the same third electrode 111, two adjacent electrode blocks 1111 are arranged in a staggered manner, and the first direction is perpendicular to the second direction . Such an arrangement can make the distance between the electrode blocks 1111 change regularly, thereby further reducing the influence of the pattern generated by the diffraction effect on the imaging when the externally incident light passes through the first display area.

Further, the plurality of electrode blocks 1111 of the same third electrode 111 can be arranged in a regular manner, for example, two electrode blocks 1111 arranged at intervals of one electrode block 1111 are arranged symmetrically with respect to the spaced electrode blocks 1111, and the arrangement is not limited to this. Such arrangement can make the arrangement of the electrode blocks 1111 more regular, corresponding to the arrangement of the light-emitting structure blocks arranged above the plurality of electrode blocks, so that the openings of the mask plate used for preparing the light-emitting structure blocks are arranged regularly. Moreover, when evaporating the light-emitting structure block of the display substrate 100 including the first display area 10 and the second display area 10, the same mask can be used to manufacture in the same evaporation process, because the pattern on the mask is relatively uniform , Also reduces the folds of the net.

Optionally, the light-emitting structure block correspondingly disposed on the electrode block 1111 includes a second pattern unit or a plurality of second pattern units, and the projection shape of the second pattern unit on the substrate is the same as that of the first pattern unit on the substrate. The projection shapes are the same or different. Optionally, the first graphic unit is different from the second image unit, and the projection of the light-emitting structure block corresponding to the electrode block 1111 on the substrate is different from the projection of the electrode block 1111 on the substrate to further reduce light passing In the first display area 10, the pattern produced by the diffraction effect affects the imaging.

Wherein, the second graphic unit includes a circle, an oval, a dumbbell, a gourd or a rectangle.

Optionally, the first signal line 12 is located in the portion of the first display area 10, and the light transmittance of the third electrode 111 and/or the fourth electrode is greater than or equal to 70%. Such an arrangement can make the light transmittance of the first display area 10 larger, so that the light transmittance of the first display area 10 meets the lighting requirements of the photosensitive device disposed below it.

The material of the first signal line 12 in the portion of the first display area 10 (including the first segment 1211 and/or the third segment 1221), the third electrode 111 and/or the fourth electrode may include indium tin oxide, indium zinc oxide, At least one of silver-doped indium tin oxide and silver-doped indium zinc oxide. Optionally, the transparent material for preparing the first signal line 12 in the first display area 10, the third electrode 111 and/or the fourth electrode is made of silver-doped indium tin oxide or silver-doped indium zinc oxide to On the basis of ensuring the high light transmittance of the first display area 10, the resistance of the part of the first signal line 12 located in the first display area 10, the third electrode 111 and/or the fourth electrode is reduced.

Further, when the driving mode of the first sub-pixel 11 is active driving, the material of the first transistor 13 may also include indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide. At least one of them to further improve the light transmittance of the first display area.

The first display area 10 of the display substrate 100 provided by the embodiment of the present application may have a shape such as a drop shape, a circle, a rectangle, a semicircle, a semiellipse, or an ellipse. But it is not limited to this, and the first display area 10 can also be designed in other shapes according to actual conditions.

An embodiment of the present application also provides a display panel, which includes the above-mentioned display substrate 100 and an encapsulation layer. The encapsulation layer is arranged on the side of the display substrate away from the substrate.

Optionally, the first display area 10 is at least partially surrounded by the second display area 20. The first display area 10 shown in FIG. 1 is partially surrounded by the second display area 20. In other embodiments, the first display area may also be completely surrounded by the second display area.

Optionally, the encapsulation layer may include a polarizer, and the polarizer covers at least the second display area 20. Further, the polarizer does not cover the first display area 10, and a photosensitive device that transmits or collects light through the first display area 10 may be disposed under the first display area 10. The polarizer can dissipate the reflected light on the surface of the display panel and improve the user experience; the first display area 10 is not provided with a polarizer, which can increase the light transmittance of the first display area and ensure that the photosensitive device arranged under the first display area 10 is effective normal work.

In the display panel provided by the embodiment of the present application, a shielding layer is provided in the second display area 20, and the portion of the first signal line 12 located in the second display area 20 is provided above the shielding layer 30, and the pixel circuit 22 is provided on the shielding layer 30. Below, the shielding layer 30 can shield the electric field formed between the first signal line 12 and the devices in the pixel circuit 22 of the second sub-pixel 21, so as to avoid the interference of the first signal line 12 in the second display area 20. The signal received by the pixel circuit 22 of the two sub-pixels 21 has an influence to ensure the display effect of the second display area 20 and improve the user experience.

An embodiment of the present application also provides a display device, which includes a device body and the above-mentioned display panel. The device body has a device area, and the display panel covers the device body. Wherein, the device area is located below the first display area 10, and a photosensitive device that passes through the first display area 10 for light collection is arranged in the device area.

Among them, the photosensitive device may include a camera and/or a light sensor. Devices other than photosensitive devices, such as gyroscopes or earpieces, can also be arranged in the device area. The device area may be a grooved area, and the first display area 10 of the display panel may be arranged on the grooved area, so that the photosensitive device can emit light or collect light through the first display area 10.

The above-mentioned display device may be a digital device such as a mobile phone, a tablet, a palm computer, or an iPod.

In the display device provided by the embodiment of the present application, the shielding layer 30 is provided in the second display area 20, and the part of the first signal line in the second display area 20 is provided above the shielding layer 30, and the pixel circuit 22 is provided on the shielding layer 30. Below, the shielding layer 30 can shield the electric field formed between the first signal line 12 and the devices in the pixel circuit 22 of the second sub-pixel 21, so as to avoid the interference of the first signal line 12 in the second display area 20. The signal received by the pixel circuit 22 of the two sub-pixels 21 has an impact, ensuring the display effect of the second display area, and improving the user experience.

In the drawings, the sizes of layers and regions may be exaggerated for clarity of illustration. Also, when an element or layer is referred to as being "on" another element or layer, it can be directly on the other element, or there may be more than one intervening layer or element. In addition, when an element or layer is referred to as being "under" another element or layer, it can be directly under the other element, or there may be more than one intervening layer or element. In addition, when a layer or element is referred to as being "between" two layers or two elements, it can be the only layer between the two layers or two elements, or more than one intervening layer or element may also be present. Similar reference numerals indicate similar elements throughout.

In this application, the terms "first" and "second" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. The term "plurality" refers to two or more, unless specifically defined otherwise.

After considering the specification and practicing the disclosure disclosed herein, those skilled in the art will easily think of other embodiments of the present application. This application is intended to cover any variations, uses, or adaptive changes of this application. These variations, uses, or adaptive changes follow the general principles of this application and include common knowledge or customary technical means in the technical field not disclosed in this application. . The description and embodiments are only regarded as exemplary, and the true scope and spirit of the application are pointed out by the following claims.

It should be understood that the present application is not limited to the precise structure described above and shown in the drawings, and various modifications and changes can be made without departing from its scope. The scope of the application is only limited by the appended claims.

Claims

A display substrate includes:

A first display area, the first display area including a first sub-pixel;

A second display area, the second display area including second sub-pixels;

The shielding layer is arranged in the second display area;

The first signal line is used to provide a control signal to the first sub-pixel, wherein the first signal line extends from the first display area through the second display area, and the first signal line is located at the The part of the second display area is disposed above the shielding layer; and

A pixel circuit, arranged under the shielding layer, for driving the second sub-pixel;

Wherein, the shielding layer is used to shield the electric field between the portion of the first signal line located in the second display area and the pixel circuit.
The display substrate according to claim 1, wherein:

The shielding layer is connected to the voltage stabilizing signal of the display substrate; or

The shielding layer is connected to a stable voltage source.
The display substrate according to claim 1, wherein:

The shielding layer covers the second display area; or,

The shielding layer has the same shape as the part of the first signal line located in the second display area, and is correspondingly disposed under the first signal line.
The display substrate according to claim 1, wherein:

The light transmittance of the portion of the first signal line located in the first display area and/or the shielding layer is greater than or equal to 70%;

The first signal line is located in a part of the first display area and/or the material of the shielding layer includes indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and silver-doped indium zinc oxide At least one of

The material of the shielding layer is a conductive material.
The display substrate according to any one of claims 1 to 4, wherein:

The first signal line includes a first segment located in the first display area and a second segment located in the second display area,

The first display area includes multiple layers, and the second display area includes multiple layers;

The first section and the second section are located on different layers, an insulating layer is provided between the first section and the second section, and a through hole is provided on the insulating layer. The second section is connected through the through hole.
The display substrate according to claim 5, wherein the first signal line comprises a first data line, and the first data line is used to provide a data signal to the first sub-pixel.
7. The display substrate of claim 5, wherein the first signal line comprises a first scan line, and the first scan line is used to provide a scan signal to the first sub-pixel.
The display substrate according to claim 5, wherein:

The second sub-pixel includes a first electrode, a first light-emitting structure on the first electrode, and a second electrode on the first light-emitting structure, and the first electrode is disposed above the shielding layer, The second section and the first electrode are formed in the same process step, and the first section and the shielding layer are formed in the same process step.
The display substrate according to any one of claims 1 to 4, wherein:

The second sub-pixel includes a first electrode, a first light-emitting structure on the first electrode, and a second electrode on the first light-emitting structure;

The first sub-pixel includes a third electrode, a second light-emitting structure on the third electrode, and a fourth electrode on the second light-emitting structure;

The first electrode is arranged above the shielding layer;

The portion of the first signal line located in the second display area and the first electrode are formed in the same process step,

The portion of the first signal line located in the first display area and the third electrode are formed in the same process step,

The first electrode, the third electrode, the first section and the second section are located in the same layer, and the first section overlaps the second section.
The display substrate according to claim 1, wherein:

The driving mode of the first display area is passive driving or active driving;

When the driving mode of the first display area is active driving, the first display area is also provided with first transistors electrically connected to the first sub-pixels in a one-to-one correspondence, and the first signal line is connected to the second A transistor is electrically connected.
The display substrate according to claim 10, wherein:

The drain of the first transistor and the portion of the first signal line in the first display area are formed in the same process step.
The display substrate according to claim 1, wherein:

A second signal line is also provided in the second display area, the second signal line is arranged under the shielding layer, and the second signal line is used to provide a control signal to the second sub-pixel.
The display substrate according to claim 12, wherein:

The second signal line includes a second data line and/or a second scan line, the second data line is used to provide a data signal to the second sub-pixel, and the second scan line is used to provide the first Two sub-pixels provide scanning signals.
4. The display substrate of claim 1, wherein the light transmittance of the first display area is greater than the light transmittance of the second display area;

The first sub-pixel includes:

Third electrodes, each of the third electrodes includes at least one electrode block;

The second light-emitting structure is located on the third electrode;

The fourth electrode is located on the second light-emitting structure.
14. The display substrate of claim 14, wherein when the third electrode includes two or more electrode blocks, the two or more electrode blocks are arranged at intervals along the first direction, and The third electrode further includes a connecting portion arranged between two adjacent electrode blocks, and the two adjacent electrode blocks are electrically connected through corresponding connecting portions; the connecting portion and the electrode block are located In the same layer, the width dimension of the connecting portion is greater than 3 μm, and the length dimension is less than half of the maximum dimension of the electrode block.
The display substrate according to claim 14 or 15, wherein the display substrate comprises a substrate, the third electrode is located above the substrate, and the electrode block comprises at least one first pattern unit, and the first The projection of the graphic unit on the substrate includes a circle, an oval, a dumbbell, a gourd or a rectangle.
The display substrate according to claim 14 or 15, wherein in the second direction, among the plurality of electrode blocks of the same third electrode, two adjacent electrode blocks are arranged in a staggered manner, and The second direction is perpendicular to the first direction;

Among the plurality of electrode blocks of the same third electrode, two of the electrode blocks that are spaced apart from one electrode block are symmetrical with respect to the spaced apart electrode blocks.
16. The display substrate according to claim 16, wherein the second light emitting structure comprises a light emitting structure block correspondingly disposed on each of the electrode blocks, the light emitting structure block comprises at least one second pattern unit, and the first The projection of the second graphic unit and the first graphic unit on the substrate is the same or different;

The projection of the second graphic unit on the substrate includes a circle, an oval, a dumbbell, a gourd or a rectangle;

The portion of the first signal line located in the first display area, and the transmittance of the third electrode and/or the fourth electrode is greater than or equal to 70%;

The part of the first signal line located in the first display area, the third electrode and/or the fourth electrode are made of indium tin oxide, indium zinc oxide, silver-doped indium tin oxide, and others. At least one of silver-doped indium zinc oxide.
A display panel, comprising the display substrate and packaging structure of any one of claims 1-18;

The first display area is at least partially surrounded by the second display area;

The packaging structure includes a polarizer, and the polarizer covers at least the second display area;

The polarizer does not cover the first display area.
A display device includes:

The device body has a device area;

The display panel according to claim 19, covering the device body;

Wherein, the device area is located below the first display area, and a photosensitive device that emits or collects light through the first display area is provided in the device area;

The photosensitive device includes a camera and/or a light sensor.